Stool



FIG. 1 is a perspective view of a stool.

FIG. 2 is a front view thereof.

FIG. 3 is a back view thereof.

FIG. 4 is a first side view thereof.

FIG. 5 is a second side view thereof.

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

CLAIM The ornamental design for a stool, as shown and described. 